Wireless IoT based overcurrent relay for transmission line protection

• Main Authors: Idris, Muhd Hafizi, Adzman, Mohd Rafi, Amirruddin, Melaty, Amin, Izatti Md
• Format: Conference Proceeding
• Language: English
• Subjects: Busbars; Circuit breakers; Coils; Internet of Things; Overcurrent; Real time; Relay; Service introduction; Substations; Terminals; Transmission lines
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0073265

Typically, the relay must be wired from sensor terminals to relay terminals and from relay terminals to trip coils in the substation. This installation comes at a high cost to the utility since several relays are mounted in the substation to protect the transmission line, busbar, transformer, and other equipment. This article proposes a wireless Internet of Things (IoT) overcurrent relay that does not require the installation of wires to transmit measurements and signals from and to the relay. The relay scheme was developed using Matlab Simulink and the scheme model then was built and deployed into the Arduino Wi-Fi MKR 1010 which made the relay a standalone device. Simulink was also used to develop a transmission line system, and the simulation was performed in real-time. To exchange the data between transmission line and relay wirelessly, ThingSpeak platform was used as the cloud where the data are sent to and extracted from. From the real-time simulation, the relay successfully detected the set fault condition and sent the trip signal to open the circuit breaker. The result proves the feasibility of wireless relay to protect the power system. However, many other factors have to be considered and improved in the future to make wireless protection reliable and secure.